{ "schemaVersion": 1, "organisationId": "O-161e1150f90744ec91d9cf89688e9846", "slug": "obayashi", "name": "OBAYASHI CORP", "updatedAt": "2026-09-28T14:18:35.453454Z", "sections": [ { "type": "OVERVIEW", "text": "Obayashi Corporation is a Japan-based construction and engineering group founded in 1892. Its core work is building and civil engineering construction in Japan and overseas, alongside real estate development. The company also identifies green energy and new businesses as areas of activity. [https://www2024-1.obayashi.co.jp/en/company/upload/file/obayashi_cp2025_e.pdf][P142054935]\n\nObayashi’s corporate philosophy emphasizes craftsmanship, creating value in built spaces, addressing environmental and social challenges, and contributing to a sustainable society. Its network extends beyond Japan across Asia, North America, Europe, the Middle East and Oceania. Consolidated net sales were approximately ¥2.62 trillion for the fiscal year ended March 2025; Obayashi Corporation itself reported 9,386 employees as of that date. [https://www2024-2.obayashi.co.jp/en/company/philosophy.html][https://www.obayashi.co.jp/en/company/group.html][P142053573][https://www2024-1.obayashi.co.jp/en/company/upload/file/obayashi_cp2025_e.pdf]\n[P142054935][P142053573][https://www2024-1.obayashi.co.jp/en/company/upload/file/obayashi_cp2025_e.pdf][https://www2024-2.obayashi.co.jp/en/company/philosophy.html][https://www.obayashi.co.jp/en/company/group.html]", "updatedAt": "2026-09-28T14:18:35.453454Z" }, { "type": "PRODUCTS", "text": "Obayashi’s principal services are building and civil engineering construction. Its building work covers offices, residential and commercial properties, factories, hospitals and schools. Civil engineering services include the construction and maintenance of tunnels, bridges, dams, railways, expressways and other infrastructure. The company also provides engineering services for facilities such as semiconductor and pharmaceutical plants, as well as building ICT and soil- and water-pollution countermeasures. [https://www.obayashi.co.jp/en/business/][https://www.obayashi.co.jp/en/business/civil_engineering.html][https://www.obayashi.co.jp/en/business/engineering.html]\n\nSpecific construction technologies include the URUP method, which uses a shield machine to build road or rail underpasses without open-cut excavation or vertical shafts; SPACE PACK, an injection method for filling voids behind tunnel linings; and Laputa 2D, an active system that uses sensors and actuators to counter building vibration. Obayashi has also demonstrated cement-based 3D printing of structural building components through its 3dpod project. [https://www.obayashi.co.jp/en/solution_technology/detail/tech_d157.html][https://www.obayashi.co.jp/en/solution_technology/detail/tech_d018.html][https://www.obayashi.co.jp/en/solution_technology/technologies/proprietary_technologies/laputa2d.html][https://www.obayashi.co.jp/en/news/detail/news20230425_1_en.html]\n\nBeyond construction, Obayashi develops and leases real estate and undertakes renewable-energy projects involving solar, wind, biomass and geothermal power, alongside green-hydrogen supply-chain demonstrations. In the fiscal year ended March 2025, building construction accounted for approximately 70% of consolidated sales and civil engineering 25%; real estate and other businesses accounted for about 3% and 2%, respectively. [https://www.obayashi.co.jp/en/business/real_estate.html][https://www.obayashi.co.jp/en/business/green_energy.html][https://ir.obayashi.co.jp/en/ir/ir-news/auto_20250512543184/pdfFile.pdf]\n[https://www.obayashi.co.jp/en/business/][https://www.obayashi.co.jp/en/business/civil_engineering.html][https://www.obayashi.co.jp/en/business/engineering.html][https://www.obayashi.co.jp/en/solution_technology/detail/tech_d157.html][https://www.obayashi.co.jp/en/solution_technology/detail/tech_d018.html][https://www.obayashi.co.jp/en/solution_technology/technologies/proprietary_technologies/laputa2d.html][https://www.obayashi.co.jp/en/news/detail/news20230425_1_en.html][https://www.obayashi.co.jp/en/business/real_estate.html][https://www.obayashi.co.jp/en/business/green_energy.html][https://ir.obayashi.co.jp/en/ir/ir-news/auto_20250512543184/pdfFile.pdf]", "updatedAt": "2026-09-28T14:18:35.453454Z" }, { "type": "GEOGRAPHY", "text": "Obayashi Corporation is headquartered in Tokyo and has offices and branches across Japan, including in Osaka, Sapporo, Sendai, Nagoya, Hiroshima and Fukuoka. Its international network includes regional headquarters in Foster City, California, and Singapore, as well as offices in London, Sydney and Auckland. Its overseas construction activities focus on North America, Southeast Asia and Oceania. [https://www2024-2.obayashi.co.jp/en/company/group/japan.html][https://www.obayashi.co.jp/en/company/group/north_america.html][https://www2024-2.obayashi.co.jp/en/company/group/asia.html][https://www.obayashi.co.jp/en/company/group/europe.html][https://www.obayashi.co.jp/en/company/group/oceania.html][https://www.obayashi.co.jp/en/business/overseas_construction.html]\n\nJapan accounted for ¥1,856.2 billion, or approximately 70.8%, of consolidated net sales in the fiscal year ended March 2025. North America contributed ¥537.6 billion (20.5%), Asia ¥217.3 billion (8.3%), and other regions ¥9.0 billion (0.3%), for total net sales of ¥2,620.1 billion. The regional sales figures do not separately identify Europe or Oceania. [https://ir.obayashi.co.jp/en/ir/data/results/main/01/teaserItems1/04/linkList/00/link/FY2024Q4suppdata_en.pdf]\n[T16237907][T16237907][T16237907][T16237907][T16237907][https://www2024-2.obayashi.co.jp/en/company/group/japan.html][https://www.obayashi.co.jp/en/company/group/north_america.html][https://www2024-2.obayashi.co.jp/en/company/group/asia.html][https://www.obayashi.co.jp/en/company/group/europe.html][https://www.obayashi.co.jp/en/company/group/oceania.html][https://www.obayashi.co.jp/en/business/overseas_construction.html][https://ir.obayashi.co.jp/en/ir/data/results/main/01/teaserItems1/04/linkList/00/link/FY2024Q4suppdata_en.pdf]", "updatedAt": "2026-09-28T14:18:35.453454Z" }, { "type": "SEGMENTS", "text": "Obayashi reports construction revenue by location and type of work, alongside real estate and other businesses. In the year ended March 31, 2025, domestic building construction accounted for approximately 51% of consolidated net sales, overseas building construction 19%, domestic civil engineering 15%, and overseas civil engineering 10%. Real estate contributed about 3%, and other businesses about 2%. These shares are based on sales to external customers. [P142017904]\n\nBuilding construction covers facilities such as offices, housing, factories, hospitals and schools; civil engineering focuses on infrastructure such as roads, railways, tunnels and bridges. Overseas construction encompasses both types of work, principally in Southeast Asia, North America and Oceania. Real estate activities include property development, leasing and urban redevelopment. [https://www.obayashi.co.jp/en/business/][https://www.obayashi.co.jp/en/business/overseas_construction.html][https://www.obayashi.co.jp/en/business/real_estate.html] Obayashi also describes green energy and new business initiatives as strategic business domains, but these should not be read as separate categories in the sales breakdown above. [P142055037][P142017904]\n[P142017904][P142055037][https://www.obayashi.co.jp/en/business/][https://www.obayashi.co.jp/en/business/overseas_construction.html][https://www.obayashi.co.jp/en/business/real_estate.html]", "updatedAt": "2026-09-28T14:18:35.453454Z" }, { "type": "HISTORY", "text": "Yoshigoro Obayashi founded the company’s predecessor as a construction contractor in Osaka in 1892. It adopted the Obayashi Corporation name in 1904 and was formally established as a company in 1936. Early projects included Tokyo Station, completed in 1914, Hanshin Koshien Stadium in 1924 and the main tower of Osaka Castle in 1931. [https://www.obayashi.co.jp/en/company/history.html][https://www.obayashi.co.jp/en/company/profile.html]\n\nObayashi’s first project outside Japan was railway construction in Korea in 1904. Its later expansion into Thailand began with a building project in 1964 and led to the establishment of Thai Obayashi Corporation in 1974. The company moved its head office from Osaka to Tokyo in 1970. Among its later projects was Tokyo Skytree, completed in 2012. [https://www.obayashi.co.jp/chronicle/130th/en/presence/overseas/][https://www.obayashi.co.jp/chronicle/130th/en/archives/chapter8_3.html][https://www.obayashi.co.jp/chronicle/130th/en/overview/chapter4.html][https://www.obayashi.co.jp/en/works/detail/work_1614.html]\n[https://www.obayashi.co.jp/en/company/history.html][https://www.obayashi.co.jp/en/company/profile.html][https://www.obayashi.co.jp/chronicle/130th/en/presence/overseas/][https://www.obayashi.co.jp/chronicle/130th/en/archives/chapter8_3.html][https://www.obayashi.co.jp/chronicle/130th/en/overview/chapter4.html][https://www.obayashi.co.jp/en/works/detail/work_1614.html]", "updatedAt": "2026-09-28T14:18:35.453454Z" } ], "sources": [ { "id": "https://www2024-1.obayashi.co.jp/en/company/upload/file/obayashi_cp2025_e.pdf", "href": "https://www2024-1.obayashi.co.jp/en/company/upload/file/obayashi_cp2025_e.pdf", "label": "www2024-1.obayashi.co.jp" }, { "id": "P142054935", "href": "https://app.finbar.com/go?id=P142054935", 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